这三个单词或者词组的意思就是完全不同的
although的意思是 尽管,尽管我很累 但还是打扫了房间 Although I was tired,I cleaned the room.
so that 的意思是为了,为了明天早点回家,我今天就打扫了房间.I cleaned the room today,so that I can go back home earlier tomorrow.
until是直到的意思 他直到开学都没有做完作业.He didn't finish the homework until the school begins.